ASTROSAT CZTI

Data Quality Report

Orbit 37334

Creation date: 2024-06-27T21:38:36.563065
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_030T02_9000005310_37334cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37334cztM0_level2_quad_clean.evt
Size (bytes)415,264,32062,138,880
Size396.0 MB 59.3 MB
Events in quadrant A3,026,818380,052
Events in quadrant B2,807,383390,593
Events in quadrant C3,167,389377,677
Events in quadrant D3,213,580360,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121142
B0116471
C0125111
D0128591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5317160.300922%
B5317460.865150%
C5317851.598646%
D53171382.595449%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7439 5318 7 7 0.09% 0.13%
B 7439 5318 17 17 0.23% 0.32%
C 7439 5318 56 56 0.75% 1.05%
D 7439 5318 129 129 1.73% 2.43%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 252386 1970.19 638 628 127.8
A 13 248 133900 1042.95 638 628 127.8
A 15 254 92615 719.87 638 628 127.8
B 5 255 119034 982.46 629 615 120.5
B 0 190 64263 528.05 629 615 120.5
B 5 172 48329 395.86 629 615 120.5
C 1 23 285733 2009.54 613 619 141.9
C 15 214 224896 1580.75 613 619 141.9
C 0 10 123058 862.97 613 619 141.9
D 10 253 394647 2597.5 620 604 151.7
D 2 249 141288 927.38 620 604 151.7
D 10 204 104624 685.69 620 604 151.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter